<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <div id="root"></div>
    <script src="./vue3基础源码/vue3.js"></script>
    <script>
        const app = Vue.createApp({
            template:`<input v-model="name"/>
                        <div>{{name}}</div>
                        `,
            setup(props,context){
                const {reactive,watch,toRefs} = Vue;
                const nameObj = reactive({name:"zhang"});
                
                watch(() => nameObj.name,(nameOne,nameTwo) => {
                    console.log(`更新数据后-->${nameOne}`,`更新数据前-->${nameTwo}`);
                });

                const {name} = toRefs(nameObj);

                return {name}
            }
        });



        const vm = app.mount("#root");
    </script>
</body>
</html>